ATHANAS. 
ATHANAS. Leach. 
Antenna superiores setis tribus instruct® : , . n 
inferiores corpore subbreviores setace®, basi squama magna apice externe unidentata 
instruct®. 
Pedipalpi articulo ultimo penultimo longiore. 
Pedes decern ; par anticum majus didactylum ; par secundum alns gracilius dulactylum, carpo 
multi-articulato : paria alia consimilia ungue simplici terminata. 
Abdomen 6-articulatum apice pentaphyllum : lamella exteriore bipartita. 
Testa antice rostro terminata. 
Upper antenn® terminated by three set® : under ones setaceous, rather shorter than the body, 
and furnished at their base with a large scale, having a tooth on its external apex. Pedipalpes 
with their last joint longer than the preceding joint. Legs ten ; anterior pah largest didactyle , 
second more slender than the others, didactyle, the wrist many-jointed ; other legs alike and 
terminated by a simple claw. Abdomen six-jointed ; the apex with five plates , the exterior 
one composed of two parts. Shell anteriorly terminated by a rostrum. 
ATHANAS NITESCENS. 
Tab. XLIY. 
A. rostro recto inermi. 
Cancer ( Astacus ) nitescens. Montagu, MSS. 
Palmmon nitescens. Leach Edinb. Encycl. vii. 401. 
Athanas nitescens. Leach Edinb. Encycl. vii. 432. 
Trans. Linn. Soc. xi. 349. 
Encycl. Britan. Suppl. i. 421. 
Fig. 1. Athanas nitescens mag. nat. 2. A. nitescens auctus. 3. Antenna superior auct. 
4. Antenna inferior auct. 5. Pedipalpus auctus. 6. Pes anticus auctus. 7. Pes secundus 
auctus. 8. Pes tertii paris auct. 9. Quarti paris ampl. 10. Quinti paris ampl. 
Athanas nitescens is occasionally found in pools left by the tide amongst the rocks on the coasts 
of Devon and Cornwall. 
It was discovered by Montagu, who sent it to me under the specific title nitescens ; the 
reason for this name is unknown. 
